30results about How to "Facilitates efficient extraction" patented technology

An intelligent video monitor system comprises one or multiple on-site intelligent video monitor device module, IVSS platform server and video monitor system terminal. It is featured as forming said on-site intelligent monitor device module by input module, output module, image intelligent processing-module and data/signaling transmission module.

The invention provides deep low-permeability high-gas coal seam drilling-cutting-sealing-pressing drilling equipment and method, and relates to the technical field of coal mine gas extraction and dustfall. The equipment comprises a drilling control system, a high-pressure hydrodynamic system, a water pressure grading control system and a fracturing plugging control system, wherein the drilling control system adjusts the drilling direction of a hole-drilling drilling rod and the water supply pressure of the drilling rod, high-pressure hydrodynamic system provides high-pressure water with different pressure for the equipment, and the water pressure grading control system ensures that the drilling and drilling cutting washing water pressure is smaller than 5 MPa, the water pressure for a cutting seam in the direction perpendicular to the length of the drilling rod is 25-35 MPa, the sealing water pressure of a sealing capsule is 35-40 MPa, and the water pressure of further pressure reliefand anti-reflection of a coal seam is 40-50 MPa; and the fracturing plugging control system finishes hole sealing and hydraulic fracturing construction control. According to the method for constructing drilling holes, slitting in the holes, hole sealing and the hydraulic fracturing by utilizing the equipment, the integrated construction of the single equipment is realized, and the construction efficiency of gas drainage hole drilling and coal seam dust prevention is improved.

The invention discloses a method for extracting and purifying monomeric macamide compounds from maca. The method comprises the steps of smashing plant maca into maca powder, adding an alcohol-acid water solution to carry out multistage countercurrent extraction, and carrying out vacuum concentration after filtering an extracting solution to obtain crude macamide; and separating and purifying by using macroporous adsorption resin, carrying out gradient elution, collecting an eluant, and respectively carrying out vacuum concentration to obtain the monomeric macamide compounds. Because the macamide compound has favorable and stable physical properties under a weak acid condition, a multistage countercurrent extraction method is carried out by using the alcohol-acid water solution, and the alcohol-acid water solution can be used for protecting effective components of macamide during extraction and greatly increasing the extraction ratio of the effective components in maca plants; the macroporous adsorption resin can be repeatedly utilized; the alcohol-acid water solution serving as a solvent is economical and practical; the high-purity monomeric macamide compounds can be conveniently and efficiently obtained, and the purity of each monomeric compound is up to more than 95%; and the method is simple in process, simple and convenient to operate, low in cost and suitable for batch production.

The invention discloses a method for producing a green coffee bean extract. The method comprises the following steps: softening a green coffee bean raw material, and tabletting to obtain flaky green coffee beans; extracting the flaky green coffee beans with mixed solvent of No.6 solvent oil and ethanol; separating the extract with water to obtain an ethanol-water layer and a No.6 solvent oil layer; filtering and concentrating the ethanol-water layer, removing solvent residues from the ethanol-water layer, and drying in vacuum to obtain the green coffee bean extract. According to the method, the green coffee beans are treated by adopting a softening and tabletting method, so that the flaky raw material with broken cells and extraction availability can be obtained, and impurities when the powdered raw material is extracted can be effectively reduced; separation by adding water can be realized by extraction of mixed solvent of No.6 solvent oil and ethanol, and the green coffee bean extract and green coffee bean oil products can be prepared in one step. The method has the characteristics of simple and effective extraction, convenience in separation, high production efficiency, small content of product impurities, industrial production availability, simple process, high content of product effective components and high yield.

The invention belongs to the technical field of biology and relates to a method for extracting alliin from black garlic. The method comprises the following steps: (1) raw material processing: mincing the black garlic, so as to obtain a raw material A; (2) high-low temperature alternate treatment; (3) repeated performing of the step (2) for 2-4 times, so as to obtain a raw material B; (4) extraction: adding extraction liquid into the raw material B in a liquid-material ratio of 1:1 to 5:1, carrying out pulping and filtering, centrifuging filtrate, and collecting supernate; (5) adsorption separation: carrying out reduced pressure concentration on the supernate obtained in the step (4), adsorbing the alliin in the supernate by virtue of cation exchange resin, carrying out desorption with ammonia water, and collecting desorption liquid; and (6) regulating the pH value of the desorption liquid, filtering, and concentrating and drying the filtrate, so as to obtain the alliin. The method for extracting alliin from black garlic is simple, efficient, rapid and low in cost and equipment requirement and can be used for conveniently and efficiently acquiring the alliin, and the technical blank for extracting the alliin from the black garlic is filled up.

The invention relates to an ultra-low amount DNA extraction kit which contains silica magnetic compound particles, an absorption mixture with pH of 4.5-7.0, a washing mixture, an eluent, wherein the absorption mixture contains 1-8mol/l salt solution, 0.5mol/l Tris-HCl, 5-50mmol/l EDTA and 0.5-5% w/v Triton, the washing mixture contains 0-2mol/l sodium acetate and ethanol with the volume percentage of 40-80% and the eluent contains 8-12mol/l Tris-HCl with the pH of 8.3. The invention realizes the ultra-low amount DNA extraction efficiently by using silica magnetic compound particles the surfaces of which have small-sized nanoscale bulges, has simple method, realizes quick extraction which can be completed within one hour and can effectively remove inhibitors and pollutants. The invention is applicable to medicine detection, pharmaceutical factories and molecular biology labs.

The invention discloses a pulsed electric field treatment preparation method of gingerol with high content of 6-gingerol. The method mainly comprises the following steps: (1) cleaning fresh yellow ginger, slicing, drying ginger slices, crushing by a crusher, and sieving to obtain dried ginger powder; (2) adding dried ginger powder into ethanol, uniformly stirring, and adding tartaric acid to adjust the pH value to obtain a dispersion liquid; (3) pumping the ginger powder dispersion liquid into a pulsed electric field treatment chamber for pulsed electric field treatment; (4) carrying out three-phase separation on the treated ginger powder dispersion liquid to obtain supernatant, removing impurities by passing through a membrane to obtain clarified filtrate, and carrying out vacuum decompression concentration on the filtrate until no ethanol is screwed out, thereby obtaining the gingerol concentrate with high content of 6-zingiberol. According to the method, a pulsed electric field technology is adopted, under the catalytic action of organic acid, part of the 6-gingerol is rapidly converted into the 6-gingerol under the low-temperature condition, so that the gingerol with high content of the 6-gingerol is prepared, and the method is short in time, efficient, simple to operate and safe in production.

The invention belongs to the technical field of liquid nitrogen ultralow temperature phase change fracturing, and particularly relates to a liquid nitrogen ultralow temperature and phase change fracturing effect similar simulation experiment device and method, and the device comprises a two-dimensional similar simulation experiment table which comprises a liquid nitrogen supply system, a similar material mixing system, a stress monitoring system, a microseismic monitoring system, a drilling imaging system and an XTDIC monitoring system; the liquid nitrogen ultralow temperature and phase change fracturing effect similar simulation experiment device and the experiment method have the beneficial effects that physical similar simulation is utilized to simulate coal seam liquid nitrogen anti-reflection, the liquid nitrogen ultralow temperature and phase change fracturing effect and displacement and deformation of an overlying rock stratum are observed, meanwhile, the stress change condition is monitored through the pressure sensor, and the experiment result is more accurate. And the fracture development and evolution law is observed through the preset drill hole.

The invention provides a mechanically-controllable cracking device with a high attenuation coefficient and relates to a mechanically-controllable cracking device. The mechanically-controllable cracking device is provided with a skeleton base, a stepping motor, a micro chip and a probe device; the skeleton base is a stainless steel cylindrical base; an opening is formed in the stepping motor, and the micro chip, the probe device and the stepping motor are assembled and fixed on the opening for single molecular test; the stepping motor is connected with the skeleton base; the micro chip is provided with a polyimide layer and a gold electrode; a micro electrode in the micro chip is led out by the probe device to form a planar external electrode, the probe device is provided with a supporting structure and a contact structure, the supporting structure can adopt a bridge type structure made of an aluminum alloy material, and a hole with a diameter of 1 cm is drilled in the center of the supporting structure for the erection of the micro chip; the contact structure takes the hole in the middle of the supporting structure as a dividing line, and polyester-coated flexible copper-clad laminates, polyfluortetraethylene plates, epoxy fiberglass cloth substrates and silver needles are symmetrically assembled on the two sides.

The invention provides a message interaction method, electronic equipment and a computer readable storage medium. The message interaction method comprises the following steps: receiving a target picture sent by a first terminal, and displaying the target picture in a message interaction interface; identifying effective text information in the target picture; and displaying the effective text information in the message interaction interface in a text format, and/or copying the effective text information to a pasteboard. According to the method, the effective text information can be convenientlyand efficiently extracted without word-by-word viewing and inputting by a user, and the method is particularly suitable for quickly and conveniently obtaining effective text information such as bankcard numbers and identity card numbers in instant messaging application.

The invention provides chicken bone antioxidant peptides and a preparation method thereof. The chicken bone antioxidant peptides are prepared by adopting chicken bones as a raw material; and the preparation method of the chicken bone antioxidant peptides is established by innovatively adopting an ultrasonic wave-microwave combined technology to assist composite enzymatic hydrolysis of flavourzymeand papain, and a chicken bone antioxidant peptide product with relatively high activity is obtained. An antioxidant peptide mixture involved in the invention has the characteristics of small molecular weight, strong activity, high safety and the like; and discovered by Uniprot KB database comparison, the antioxidant peptide mixture contains two new chicken bone peptides with amino acid sequencesbeing Ser-Cys-Pro-Pro-Gly-His and Ala-Thr-Phe-Gln respectively. For the antioxidant peptides and the preparation method thereof involved by the invention, high-value utilization of the chicken bones is realized, and the antioxidant peptides can be used as an excellent alternative of an existing synthetic antioxidant and provide a theoretical basis and practical reference for research and development of novel natural additives in industries of foods, medicines and cosmetics.

The invention discloses a method for building a cell culture system for a chimera obtained through grafting vinca rosea to vinca minor. The method comprises the steps of cutting roots of the vinca minor, then, reserving 2 to 3 leaves for each vinca minor plant so as to prepare rootstock, inoculating growth points of the vinca rosea to the vinca minor rootstock under aseptic conditions, then, enabling each place of combination of a graft and the corresponding rootstock to emerge a callus, carrying out fluid suspension culture on the calli, and carrying out screening so as to obtain an excellent cell line. According to the method, after the growth points of the vinca rosea is grafted to the vinca minor, the calli are induced by using the obtained chimera as a material, and finally, an in-vitro cell suspension culture system for the chimera is built; proven by tests, the content of anticancer substances (such as vinblastine, vincristine and vindoline) in a cell derived from the chimera is increased.

The invention relates to the technical field of sewage detection, and discloses a timing sampling device for sewage detection; the timing sampling device comprises a base; a driving rod is movably connected above the base; the inner side of the driving rod is movably connected with a rotating rod, and the other end of the rotating rod is hinged with a connecting rod I. When an extraction box rotates to pass through a protruding part of a cam, a pressing plate can drive a piston to move downwards and then upwards, so that the air pressure in a liquid storage cavity is reduced, the detected sewage is pressed into the liquid storage cavity by external atmospheric pressure, the extraction process is convenient and efficient, and due to the fact that the three sets of extraction boxes are arranged, the average value of detection results is obtained, and it is guaranteed that the detection results are accurate and effective; the rotating rod is in one stroke, a movable plate is driven by the connecting rod to complete the step of placing a dustproof cover from a grabbing belt, the external environment is prevented from polluting an extracted sample, the detection results are more accurate; the power source of the movable plate provided with the dustproof cover is still the driving rod, a new motor does not need to be added, the cost is reduced, and the practicability of the device is improved.

Methods and compositions for extracting nucleic acids such as microRNAs (miRNAs) from biological samples are provided. Aspects of the methods include contacting a biological sample with proteinase K followed by contact with ferric oxide particles under acidic conditions to induce binding between the ferric oxide particles and nucleic acids (e.g., miRNAs) of the sample. In some cases, the ferric oxide particles are provided as part of a dissolvable film, which releases the ferric oxide particles upon solvation. In some embodiments, after nucleic acids bind to the ferric oxide particles, the particles are magnetically separated from the sample and are contacted with an alkaline elution buffer to release the nucleic acids.

The invention belongs to the technical field of GaN power device information processing, and discloses an information processing method and system for a GaN power device applied to quick charging. Theinformation processing system of the GaN power device comprises a power detection module, a signal parameter extraction module, a signal modeling module, a main control module, a power consumption calculation module, a service life prediction module, a terminal module, a data storage module, a power supply module and a display module. The method comprises the following steps: firstly, establishing a GaN power device small signal equivalent circuit model through a signal modeling module; a GaN power device large signal equivalent circuit model is established, and finally a scattering parameterand large signal characteristic statistical model of a GaN process line is established according to model parameter statistical characteristics, so that accurate modeling of small signal and large signal characteristics of a certain specific process line is realized, and the accuracy of the model is improved. Devices of different sizes and intrinsic parameters of the devices under various bias conditions can be extracted more conveniently and efficiently.